#pragma once
#include<string>
#include<unordered_map>

namespace RPC_project
{
    // request的字段宏
    #define KEY_METHOD "method"
    #define KEY_PARAMS "parameters"
    #define KEY_TOPIC_KEY "topic_key"
    #define KEY_TOPIC_MSG "topic_msg"
    #define KEY_OPTYPE "optype"
    #define KEY_HOST "host"
    #define KEY_HOST_IP "ip"
    #define KEY_HOST_PORT "port"

    // response的字段宏
    #define KEY_RCODE "rcode"
    #define KEY_RESULT "result"

    //消息类型
    enum class MType {
        REQ_RPC = 0,
        RSP_RPC,
        REQ_TOPIC,
        RSP_TOPIC,
        REQ_SERVICE,
        RSP_SERVICE
    };

    //response的状态码
    enum class RCode {
        RCODE_OK = 0,
        RCODE_PARSE_FAILED,
        RCODE_ERROR_MSGTYPE,
        RCODE_INVALID_MSG,
        RCODE_DISCONNECTED,
        RCODE_INVALID_PARAMS,
        RCODE_NOT_FOUND_SERVICE,
        RCODE_INVALID_OPTYPE,
        RCODE_NOT_FOUND_TOPIC,
        RCODE_INTERNAL_ERROR
    };

    static std::string errReason(RCode code)
    {
        static std::unordered_map<RCode, std::string> err_map = {
            {RCode::RCODE_OK, "成功处理！"},
            {RCode::RCODE_PARSE_FAILED, "消息解析失败！"},
            {RCode::RCODE_ERROR_MSGTYPE, "消息类型错误！"},
            {RCode::RCODE_INVALID_MSG, "⽆效消息"},
            {RCode::RCODE_DISCONNECTED, "连接已断开！"},
            {RCode::RCODE_INVALID_PARAMS, "⽆效的Rpc参数!"},
            {RCode::RCODE_NOT_FOUND_SERVICE, "没有找到对应的服务！"},
            {RCode::RCODE_INVALID_OPTYPE, "⽆效的操作类型"},
            {RCode::RCODE_NOT_FOUND_TOPIC, "没有找到对应的主题！"},
            {RCode::RCODE_INTERNAL_ERROR, "内部错误！"}
        };
        auto it =err_map.find(code);
        if(it == err_map.end())
        {
            return "未知错误";
        }
        else
        {
            return it->second;
        }
    }

    //两种request的类型
    enum class RType 
    {   
        REQ_ASYNC=0,
        REQ_CALLBACK
    };

    //主题操作类型
    enum class TopicOptype 
    {
        TOPIC_CREATE = 0,
        TOPIC_REMOVE,
        TOPIC_SUBSCRIBE,  //主题订阅
        TOPIC_CANCEL,
        TOPIC_PUBLISH 
    };

    //服务操作类型
    enum class ServiceOptype 
    {
        SERVICE_REGISTRY = 0,
        SERVICE_DISCOVERY,
        SERVICE_ONLINE,
        SERVICE_OFFLINE,
        SERVICE_UNKNOW
    };


}